Need help with DHCP server

RouterOS Beginner Basics
1

Hello all,

I have the following setup:

  1. bridge includes eth2 and eth5
  2. IP address 192.168.1.1/24 on bridge
  3. IP address 192.168.2.1/24 on eth5
  4. Both eth2 and eth5 have devices with IP addresses 192.168.1.0/24
  5. Only eth5 have devices with IP addresses 192.168.2.0/24

With the above setup I want to have two separate DHCP servers:

  1. 1st DCHP server with pool 192.168.1.2-192.168.1.100 on eth2 only
  2. 2nd DCHP server with pool 192.168.2.2-192.168.2.100 on eth5 only
    But RouterOS does not allow DHCP server on slave interfaces.

Is there a way to do this ?

As a bonus:
Is there a way to assign DHCP pools/ IP subnets based on MAC address block mask (same manufacturer, ex. 11:22:33:xx:xx:xx) ?
The goal is to be able to separate device from different manufacturers in different subnets.
I know I can do static DHCP assignments base on MAC address but the goal is to use MAC address mask, not specific MAC addresses.

Thanks for the help.

2

Hi

is that line correct “1. bridge includes eth2 and eth3”?
Or did you mean eth5 instead of eth3?

Keep in mind that bridged interfaces behave as one! → it’s the same broadcast domain.

3

Fixed, thanks for the tip.

Not quite the answer I hoped for. But I somehow knew that this is the case, just wanted to be sure I’m not missing something.

And do you have any idea on the bonus part - MAC address block mask ?

4

It makes no sense,
The bridge is what is being dhcp served, not the ethernet interfaces.
if you want ether5 to have a different dhcp service than eth2, put it outside the bridge by itself (separate LAN/DMZ) or create another bridge and put it on that second bridge.